Unaggreed charges.

On the 8th of April 2015 I wanted to cancel my contract with vodacom and migrate to different Service provider as Vodacom's prices went up. When wanting to cancel a lady by the name of Velicia Maleka convinced me to stay with them as she will give me the same upgrade deal as other providers. The phone was delivered as promise. The 1st of May came and I did not recieve the additional minutes and the extra data as agreed on email. After phoning Vodacom they fixed the data and minutes on account. Now i get a bill with an extra R409 rand migration fee aswell as extra R199 rand device fee. I immediatly phoned Vodacom and spoke with 4 different team leaders in Velicia's department. Every time i get promised I will get a Phonecall back . No one ever phones me back. Vodacom has no after service. Im still waiting for a call from Shembele Mzazi. I have also said I would just take the phone in and cancel everything. I have not agreed to any of these charges. After being a client for more than 10 years I think its time to move on and up.